package Demo1;

public class Keyboard implements USB {

    @Override
    public void openDevice() {
        System.out.println("打开键盘...");
    }

    @Override
    public void closeDevice() {
        System.out.println("关闭键盘...");
    }

    public void input(){
        System.out.println("输入数据...");
    }
}
